| September 5 | Last day to drop classes (no tuition penalty) |
| September 5 | Last day to enroll in Mason two-payment plan |
| September 5 | Last day to add classes |
| September 5-16 | Welcome2Mason |
| September 10 | Grandparents Day |
| September 12 | Last day third party billing authorizations accepted |
| September 13 | Get Connected 2 Mason Fair |
| September 19 | Last day to drop classes (33% tuition penalty) |
| September 20-22 | Rosh Hashanah |
| September 22 | First day of autumn |
| September 25 | Midterm evaluations begin |
| September 29 | Final day to drop classes (67% tuition penalty) |
| September 29-30 | Yom Kippur |